Extract QGuiAction(Group) from QAction(Group) into QtGui

Simply moving QAction to QtGui was not deemed possible since
it operates on a set of controls of some kind. The approach to
extract a base class was taken instead, named QGuiAction
following the QGuiApplication scheme. QAction remains in
widgets, but changes base class.

For QActionGroup, the functions addAction(text/icon), which
create an action, cannot be implemented in QtGui, hence a base
class is needed, too (unless they are deprecated and removed).

- Extract base classes providing functionality not based on
  QtWidgets, using virtuals in QGuiActionPrivate to provide
  customization points

- Change QActionEvent to take QGuiAction, removing
  the need to forward declare QAction in QtGui

[ChangeLog][QtGui] Added QGuiAction(Group) and made the equivalent
existing classes in Qt Widgets derive from them. This provides
basic functionality for implementing actions in QML.

Task-number: QTBUG-69478
Change-Id: Ic490a5e3470939ee8af612d46ff41d4c8c91fbdf
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Mitch Curtis <mitch.curtis@qt.io>
Reviewed-by: Oliver Wolff <oliver.wolff@qt.io>
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>

1 files changed, 3 insertions, 3 deletions

diff --git a/src/widgets/widgets/qlineedit_p.cpp b/src/widgets/widgets/qlineedit_p.cpp
index d2b5f87906..f6e7337878 100644
--- a/src/widgets/widgets/qlineedit_p.cpp
+++ b/src/widgets/widgets/qlineedit_p.cpp
@@ -370,7 +370,7 @@ void QLineEditIconButton::actionEvent(QActionEvent *e)
 {
     switch (e->type()) {
     case QEvent::ActionChanged: {
-        const QAction *action = e->action();
+        const auto *action = e->action();
         if (isVisibleTo(parentWidget()) != action->isVisible()) {
             setVisible(action->isVisible());
             if (QLineEditPrivate *lep = lineEditPrivate())
@@ -545,7 +545,7 @@ void QLineEditPrivate::positionSideWidgets()
     }
 }
 
-QLineEditPrivate::SideWidgetLocation QLineEditPrivate::findSideWidget(const QAction *a) const
+QLineEditPrivate::SideWidgetLocation QLineEditPrivate::findSideWidget(const QGuiAction *a) const
 {
     int i = 0;
     for (const auto &e : leadingSideWidgets) {
@@ -634,7 +634,7 @@ QWidget *QLineEditPrivate::addAction(QAction *newAction, QAction *before, QLineE
     return w;
 }
 
-void QLineEditPrivate::removeAction(QAction *action)
+void QLineEditPrivate::removeAction(QGuiAction *action)
 {
 #if QT_CONFIG(action)
     Q_Q(QLineEdit);